Speedrunner Kosmic allegedly discovered a way to beat the original Donkey Kong Arcade's infamous kill screen using a ladder glitch.

In 1981, Mario made his debut in Donkey Kong, as a man trying to save his girlfriend from his pet gorilla. His name was initially Jumpman, and his job was to climb up ladders and avoid barrels ...

Created by Shigeru Miyamoto while he was developing Donkey Kong (which, incidentally, was supposed to be a game based on Popeye), Mario was first ... version and "Jumpman" in the English instructions.